Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured

Question

I am working on a Spring Boot Batch example with MongoDB and I have already started the mongod server.

When I launch my application, I

Answer 1

If you added "spring-boot-starter-data-jpa" dependency in pom.xml, Please add respective database in dependency like h2 and etc.

Answer 2

For me the resource folder was getting excluded on a maven update/build. I went to Build Path>Source and found that src/main/resources have "Excluded **". I removed that entry (Clicked on Excluded **>Remove>Apply and Close).

Then it worked fine.

Answer 3

Excluding the DataSourceAutoConfiguration.class worked for me:

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class })

Answer 4

If datasource is defined in application.resources, make sure it is locate right under src/main and add it to the build path.

Answer 5

I meet same error when start a new project. Use command line works for me.

./gradlew bootRun

Answer 6

“Failed to configure a DataSource” error. First, we fixed the issue by defining the data source. Next, we discussed how to work around the issue without configuring the data source at all.

https://www.baeldung.com/spring-boot-failed-to-configure-data-source